Grundfos Pump Cartridge Mechanical Seal GLF-G4-16mm for CNP CDL/CDLF Pumps
Material: SIC/SIC/VIT
Product Overview
CDLC-12 CDLC-16 CDLC-22(4R) Cartridge Mechanical Seal available in sizes 12mm, 16mm, and 22mm specifically designed for CNP CDL/CDLF Pumps. Constructed with premium SIC/SIC/VIT materials for superior performance and durability.
Available Sizes
- CDLC-12(4R) - shaft size 12mm
- CDLC-16(4R) - shaft size 16mm
- CDLC-22(4R) - shaft size 22mm (Available in Size A and Size B variants)
Technical Parameters
| Parameter |
Specification |
| Temperature Range |
-30℃ to +200℃ |
| Maximum Pressure |
≤ 1.2 MPa |
| Maximum Speed |
≤ 10 m/s |
| Compatible Media |
Acid, alkali, and below medium corrosive liquids |
Material Composition
| Component |
Material |
| Rotary Ring |
SiC/VIT |
| Stationary Ring |
Carbon/SiC/TC |
| Spring |
SUS304/SUS316 |
| Stationary Seat |
SUS304/SUS316 |
| Secondary Seal |
FKM |
| Rotary Ring Holder |
SUS304/SUS316 |
Installation Preparation
- Shaft Outside Diameter tolerance: ±0.05mm
- Shaft run out: <0.1mm
- Shaft end float: <0.13mm
- No sharp edges on the shaft over the O-ring area
Important Note: During installation, avoid scratching or damaging the O-ring. If any component is damaged, please contact us for replacement.
Installation Instructions
- Cartridge seals are pre-cleaned and leak-tested. Do not disassemble before installation to avoid damage.
- Ensure shaft fitting allowance is dl h6 0.8. Lubricate shaft with oil before installation.
- Place cartridge seal into pump chamber and proceed with the following steps:
- Tighten four screw bolts of flanges, ensuring medium leading in hole "G" is at top position
- Tighten four set screws to position shaft sleeve on shaft
- Remove four gauge plates (retain for future use)
- Connect medium lead-in pipe with hole "G" for friction heat removal and seal chamber flushing
Final Check: After installation, manually rotate the shaft to verify smooth rotation. If rotation is not smooth, the seal may have been improperly installed.
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